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Altera_Forum
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12 years ago

signal power estimation

Hello guys.. I'm trying to implement a block that evaluates the signal rms value along n samples. So, using the std definition one must do (x_k is a complex number so I have to take in acc...
Altera_Forum's avatar
Altera_Forum
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12 years ago

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Thank you kaz.

How can I implement such accumulator ?Is there a precompiled standard block or has to be written by hand ?

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just a feedback register on clocke edge

sum <= sum + din; --din is I*I + Q*Q

you need to read final result, apply reset etc.

at the end you carefully get the mean of squares:

sum_trunc <= sum(n downto 20);

Then you decide for the square rooting issue